Final answer:
The stamp '316L' and '304L' on a pipe denote the grade or type of stainless steel used to manufacture the pipe and fittings. These stamps indicate the composition of the stainless steel and the level of corrosion resistance it offers.
Step-by-step explanation:
The stamp '316L' and '304L' on a pipe denote the grade or type of stainless steel used to manufacture the pipe and fittings. These stamps indicate the composition of the stainless steel and the level of corrosion resistance it offers.
The grades 316L and 304L are commonly used in industries such as chemical, pharmaceutical, and food processing where corrosion resistance is crucial.